package com.project.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.project.bean.ColumnBean;
import org.apache.ibatis.annotations.Mapper;

import java.util.LinkedList;
import java.util.List;

@Mapper
public interface IColumnMapper extends BaseMapper<ColumnBean> {


    List<ColumnBean> findColumnCount (Integer year);

}
